|
|
タケカワ シュンヤ
Takekawa Shunya 竹川 俊也 所属 神奈川大学 工学部 応用物理学科 職種 助教 |
|
言語種別 | 英語 |
発行・発表の年月 | 2019/01 |
形態種別 | 学術雑誌 |
査読 | 査読あり |
標題 | Indication of Another Intermediate-mass Black Hole in the Galactic Center |
執筆形態 | 共著 |
掲載誌名 | Astrophysical Journal Letters |
掲載区分 | 国外 |
出版社・発行元 | Astrophysical Journal Letters |
巻・号・頁 | 871(1) |
著者・共著者 | Takekawa S,Oka T,Iwata Y,Tsujimoto S,Nomura M |
概要 | © 2019. The American Astronomical Society. We report the discovery of molecular gas streams orbiting around an invisible massive object in the central region of our Galaxy, based on the high-resolution molecular line observations with the Atacama Large Millimeter/submillimeter Array. The morphology and kinematics of these streams can be reproduced well through two Keplerian orbits around a single point mass of (3.2 ± 0.6) ×10 4 M o . We also found ionized gas toward the inner part of the orbiting gas, indicating dissociative shock and/or photoionization. Our results provide new circumstantial evidences for a wandering intermediate-mass black hole in the Galactic center, suggesting also that high-velocity compact clouds can be probes of quiescent black holes that abound in our Galaxy. |
DOI | 10.3847/2041-8213/aafb07 |
ISSN | 20418205 |
PermalinkURL | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85062029904&origin=inward |